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Negative static electrically charged coating method and composition for repelling dust from glass

a technology of negative static electrical charge and coating method, which is applied in the direction of polishing composition, other chemical processes, transportation and packaging, etc., can solve the problems of coating susceptible surfaces, too weak to overcome the strong positive static electrical charge of glass, and failure to repel dus

Inactive Publication Date: 2005-03-03
ROOD LEONARD D
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0015] Dust may contain fabric fibers, human skin particles, animal dander, and microscopic creatures called mites. Bacteria, mold spores, food particles and other debris. The static electrical charge on these particles is negative. These particles and fibers will adhere to positive static electrically charged surfaces. Coating of these surfaces with a strong, thin, negative static electrically charged coating will inhibit the adhesion of these particles to the surface. The coating should be thin because thicker coatings may cause streaking.

Problems solved by technology

However, it did fail to repel dust after this 2 week period.
The cleaning and polishing silicone compositions used in U.S. Pat. No. 4,511,489 were antistatic and inert; thereby they would be too weak to overcome the strong positive static electrical charge of the glass.
Enclosed areas, such as homes and the inside of automobiles, are subjected to dust and human skin fibers, which coat susceptible surfaces.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0082] The surface of a vertical glass mirror was determined to be electrostatically positively charged by allowing a negatively charged mixture of human fibers and dust to attach to the surface of the mirror in a home. Human fibers and dust which had accumulated onto the surface of the vertical mirror were then removed by spraying a mixture of water and a surfactant onto the surface of the glass followed by drying with a clean paper towel. A polydimethylsiloxane liquid silicone fluid with a viscosity of 5 centistokes was sprayed onto the surface of the vertical mirror. The silicone was rubbed to a thin film by rubbing with a paper towel. A mixture of human fibers and dust were then placed on the coated surface of the mirror. The human fibers and dust mixture did not attach to the mirror. The surface of the mirror was still uncoated with human fibers and dirt after one month.

example 2

[0083] A polydimethylsiloxane liquid with a viscosity of 50 centistokes was sprayed onto a vertical glass mirror treated in a manner similar to that in Example 1. The film formed was thin and had no streaks. Human fibers and dust did not adhere to the surface of the mirror.

example 3

[0084] A silicone coated paper containing polydimethylsiloxane liquid with a viscosity of 8 centistokes was rubbed onto the outside surface of an automobile windshield using a circular rotating polisher and was subjected to outside elements. Rain water droplets adhered to the outside surface of the windshield as small nodules which disappeared after the windshield dried. Dirt coatings were significantly reduced compared with outside automobile windshield surfaces which were not coated with the silicone liquid.

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Abstract

A liquid which has a negative static electrical charge is coated onto positive static electrically charged glass windows, automobile and truck windshields and glass mirrors, causing the surfaces to become negatively charged. Since like static electrical charges will repel each other, the negative static electrically charged liquid coating will repel negative static electrically charged human fibers, dust and other negatively charged particles. The liquid can be coated onto the surface and then rubbed to a thin film by using a paper or fabric sheet or a circular rotating polisher. The liquid can also be pre-coated onto a paper or fabric sheet or a circular rotating polisher and then rubbed onto the surface to produce a thin film. If the film is not thin, the coating will be streaked. The coating is water insoluble and preferably is a water insoluble silicone, preferably in an amount of at least 70% silicone and most preferably comprises dimethylsiloxane or polydimethylsiloxane. The coating can be mixed with a water insoluble organic solvent and should have a viscosity in the range of 5-50 centistokes.

Description

CROSS-REFERENCES TO RELATED APPLICATIONS [0001] This application is a continuation-in-part of my copending patent application Ser. No. 10 / 393,107, filed Mar. 20, 2003.STATEMENT REGARDING FEDERALLY-SPONSORED RESEARCH AND DEVELOPMENT [0002] (Not Applicable) REFERENCE TO AN APPENDIX [0003] (Not Applicable) BACKGROUND OF THE INVENTION [0004] 1. Field of the Invention [0005] This invention relates to a means which will convert a positive static electrically charged glass surface to a negative static electrically charged surface so that it will repel human fibers, dust and silica based dirt. [0006] 2. Description of the Related Art [0007] House dust contains human negative static electrically charged fibers and other particles. This dust will attach to positive static electrically charged glass windows, mirrors and other glass objects. Typical dust cleaning solutions for glass use water and a surfactant to remove surface dust; however, because the surfaces remain positive static electrica...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B05D1/02B05D1/04B05D5/08C03C17/30C03C17/32C09D5/00C09G1/16
CPCB05D1/02B05D5/08B05D2203/35C09G1/16C03C17/32C09D5/008C03C17/30Y10T428/31612
Inventor ROOD, LEONARD D.
Owner ROOD LEONARD D
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